FH1 is out of developement for few years now. The dev team members had changed through the time and I don't know how many of them are here from FH1 days and they probably don't have time to work with FH1 anymore. From what I know it is not possible so easily and It would require much more work than replacing few lines in notepad and should be done with every single vehicle individual.

design didn't match FH2 gameplay

It would also break original FH gameplay.

not possible

instead of pickup kits I would like to see it mounted like stationary bren somewhere as a light AA gun

in the weapon section on the main page it says that there are 10, 20 and 30 magazines. I think it needs update

Recon class soldiers could have radio on their back. They're using radio already (when using binoculars) so it will be only a cosmetic (but important imo) change. Also we have already american radio model static so there is one less model to create. What we need is to attach it to the soldier's back 

Maybe this video could be somehow helpful:
http://www.youtube.com/watch?v=GKO5MBfbKgI&feature=g-all-f&context=G2f0ba74FAAAAAAAABAA